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 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.db.it.aggregation;

import org.apache.iotdb.it.env.EnvFactory;
import org.apache.iotdb.it.framework.IoTDBTestRunner;
import org.apache.iotdb.itbase.category.ClusterIT;
import org.apache.iotdb.itbase.category.LocalStandaloneIT;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import static org.apache.iotdb.db.it.utils.TestUtils.prepareData;
import static org.apache.iotdb.db.it.utils.TestUtils.resultSetEqualWithDescOrderTest;
import static org.apache.iotdb.itbase.constant.TestConstant.*;

@RunWith(IoTDBTestRunner.class)
@Category({LocalStandaloneIT.class, ClusterIT.class})
public class IoTDBAggregationOptimizeIT {
    private static final String[] SQLs =
            new String[]{
                    "CREATE DATABASE root.test",
                    "CREATE TIMESERIES root.test.1region_d1.s1 WITH DATATYPE=INT32, ENCODING=PLAIN",
                    "CREATE TIMESERIES root.test.1region_d1.s2 WITH DATATYPE=INT32, ENCODING=PLAIN",
                    "CREATE TIMESERIES root.test.1region_d2.s1 WITH DATATYPE=INT32, ENCODING=PLAIN",
                    "CREATE TIMESERIES root.test.1region_d2.s2 WITH DATATYPE=INT32, ENCODING=PLAIN",
                    "CREATE TIMESERIES root.test.2region_d1.s1 WITH DATATYPE=INT32, ENCODING=PLAIN",
                    "CREATE TIMESERIES root.test.2region_d1.s2 WITH DATATYPE=INT32, ENCODING=PLAIN",
                    "CREATE TIMESERIES root.test.2region_d2.s1 WITH DATATYPE=INT32, ENCODING=PLAIN",
                    "CREATE TIMESERIES root.test.2region_d2.s2 WITH DATATYPE=INT32, ENCODING=PLAIN",
                    "INSERT INTO root.test.1region_d1(timestamp,s1,s2) values(1, 1, 1)",
                    "INSERT INTO root.test.1region_d2(timestamp,s1,s2) values(1, 1, 1)",
                    "INSERT INTO root.test.1region_d1(timestamp,s1,s2) values(2, 2, 2)",
                    "INSERT INTO root.test.1region_d2(timestamp,s1,s2) values(2, 2, 2)",
                    "INSERT INTO root.test.2region_d1(timestamp,s1,s2) values(1, 1, 1)",
                    "INSERT INTO root.test.2region_d2(timestamp,s1,s2) values(1, 1, 1)",
                    "INSERT INTO root.test.2region_d1(timestamp,s1,s2) values(1000000000000, 1, 1)",
                    "INSERT INTO root.test.2region_d2(timestamp,s1,s2) values(1000000000000, 1, 1)",
                    "flush",
            };

    @BeforeClass
    public static void setUp() throws Exception {
        EnvFactory.getEnv().initBeforeClass();
        prepareData(SQLs);
    }

    @AfterClass
    public static void tearDown() throws Exception {
        EnvFactory.getEnv().cleanAfterClass();
    }

    @Test
    public void testEachSeriesOneRegion() {
        String[] expectedHeader =
                new String[]{
                        count("root.test.1region_d1.s1"),
                        count("root.test.1region_d2.s1"),
                        count("root.test.1region_d1.s2"),
                        count("root.test.1region_d2.s2")
                };
        String[] retArray = new String[]{"2,2,2,2,"};
        resultSetEqualWithDescOrderTest(
                "select count(s1), count(s2) from root.test.1region_d1, root.test.1region_d2",
                expectedHeader,
                retArray);
    }

    @Test
    public void testSomeSeriesOneRegion() {
        String[] expectedHeader =
                new String[]{count("root.test.1region_d1.s1"), count("root.test.2region_d2.s1")};
        String[] retArray = new String[]{"2,2,"};
        resultSetEqualWithDescOrderTest(
                "select count(s1) from root.test.1region_d1, root.test.2region_d2",
                expectedHeader,
                retArray);
    }

    @Test
    public void testAggregationResultConcatOneRegion() {
        String[] expectedHeader =
                new String[]{count("root.test.2region_d1.s1"), count("root.test.2region_d1.s2")};
        String[] retArray = new String[]{"2,2,"};
        resultSetEqualWithDescOrderTest(
                "select count(s1),count(s2) from root.test.2region_d1", expectedHeader, retArray);
    }

    @Test
    public void mixTest() {
        String[] expectedHeader =
                new String[]{
                        count("root.test.2region_d1.s1"),
                        count("root.test.2region_d2.s1"),
                        count("root.test.1region_d2.s1"),
                        count("root.test.1region_d1.s1"),
                        count("root.test.2region_d1.s2"),
                        count("root.test.2region_d2.s2"),
                        count("root.test.1region_d2.s2"),
                        count("root.test.1region_d1.s2")
                };
        String[] retArray = new String[]{"2,2,2,2,2,2,2,2,"};
        resultSetEqualWithDescOrderTest(
                "select count(s1),count(s2) from root.test.**", expectedHeader, retArray);

        expectedHeader =
                new String[]{
                        TIMESTAMP_STR,
                        sum("root.test.2region_d1.s1"),
                        sum("root.test.2region_d2.s1"),
                        sum("root.test.1region_d2.s1"),
                        sum("root.test.1region_d1.s1"),
                        sum("root.test.2region_d1.s2"),
                        sum("root.test.2region_d2.s2"),
                        sum("root.test.1region_d2.s2"),
                        sum("root.test.1region_d1.s2")
                };
        retArray =
                new String[]{
                        "1,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,", "2,null,null,2.0,2.0,null,null,2.0,2.0,"
                };
        resultSetEqualWithDescOrderTest(
                "select sum(s1),sum(s2) from root.test.** group by ([1,3), 1ms)", expectedHeader, retArray);
    }

    @Test
    public void testStaticAggregator() {
        String[] expectedHeader =
                new String[]{
                        count("root.test.1region_d1.s1"),
                        sum("root.test.1region_d1.s1"),
                        avg("root.test.1region_d1.s1"),
                        extreme("root.test.1region_d1.s1"),
                        maxValue("root.test.1region_d1.s1"),
                        minValue("root.test.1region_d1.s1"),
                        firstValue("root.test.1region_d1.s1"),
                        lastValue("root.test.1region_d1.s1"),
                        maxTime("root.test.1region_d1.s1"),
                        minTime("root.test.1region_d1.s1"),
                        count("root.test.2region_d1.s1")
                };
        String[] retArray = new String[]{"2,3.0,1.5,2,2,1,1,2,2,1,2,"};
        resultSetEqualWithDescOrderTest(
                "select count(1region_d1.s1),sum(1region_d1.s1),avg(1region_d1.s1),"
                        + "extreme(1region_d1.s1),max_value(1region_d1.s1),min_value(1region_d1.s1),"
                        + "first_value(1region_d1.s1),last_value(1region_d1.s1),max_time(1region_d1.s1),"
                        + "min_time(1region_d1.s1),count(2region_d1.s1) from root.test",
                expectedHeader,
                retArray);
    }
}
